Online Education For Gem Enthusiasts

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Ways to Start Your Gemology Education

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Gem Learning Center

Hundreds of free articles on the science, identification and techniques of gemology.
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2,314 Articles
9,023 Members
147 Directory Listings
154,899 Followers

The world's best gem articles, published weekly.

Most Recent Articles

Hearts and Arrows - buying diamonds online
Hearts and Arrows Diamond: Is it Worth it?

Although cut for perfect symmetry and top performance, is a Hearts and Arrows diamond worth the high price? Learn more and decide what’s best for your ring.

classroom at the IGM, Madagascar - gem faceting classes
A Comprehensive Study of Gem Faceting Classes Around the World

Compare the prices and philosophies of gem faceting classes from around the world. Learn if there’s a local club or a faraway school that’s right for you.

demantoid and diamond ring - rare and expensive engagement ring stones
Ten Rare and Expensive Engagement Ring Stones

These ten gems are some of the rarest and most desired in the world. If money is no object, consider one of these stones for an expensive engagement ring.

rose quartz pin wheel 1
Pin Wheel: Online Faceting Designs and Diagrams

Inspired by the classic children’s toy, Jeff Graham’s award-winning Pin Wheel gem design is easy to cut and makes a very interesting stone.

domeykite cabochons - algodonite
Algodonite Value, Price, and Jewelry Information

Bright, silvery metallic cabochons of algodonite and domeykite are attractive and unusual. Faceted pieces are rarely seen but very beautiful when polished to a high luster.

Jewelry Trade Center - Bangkok gemology schools
Bangkok: City of Gemology Schools

Bangkok is the center of the colored gem trade. Compare the top four Bangkok gemology schools and see why this city is the ideal place to learn about gems.

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"Becoming a Pro Member of IGS just made good sense for my business. The gemology resources are fantastic, and my profile lets potential customers know I am serious about colored gemstones. And frankly, if I get any exposure to potential customers it's a no-brainer."
Paul Bierker, Paul Michael Designs
Jeweler, IGS Pro Member

The world's best online resource for gemstone appraisal

Over 15 years, we have assembled detailed pricing and value information for appraising over 70 different gemstones. The values in our guide come from a variety of sources including primary and secondary gemstone dealers, jewelers, miners, and wholesale suppliers of commonly traded gemstones.

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